Williamtown rate history — Allowance rate (%). Query any past effective date directly via the API.
| Effective date | COLA (post allowance) | Hardship differential | Danger pay |
|---|---|---|---|
| Jul 12, 2026 | 25% | 0% | 0% |
| Jun 28, 2026 | 25% | 0% | 0% |
| May 3, 2026 | 30% | 0% | 0% |
| Apr 5, 2026 | 25% | 0% | 0% |
| Mar 22, 2026 | 30% | 0% | 0% |
| Feb 8, 2026 | 25% | 0% | 0% |
| Jan 11, 2026 | 20% | 0% | 0% |
| May 4, 2025 | 15% | 0% | 0% |
| Dec 29, 2024 | 10% | 0% | 0% |
| Nov 17, 2024 | 15% | 0% | 0% |
| Oct 20, 2024 | 20% | 0% | 0% |
| Oct 6, 2024 | 15% | 0% | 0% |
| Sep 22, 2024 | 10% | 0% | 0% |
| Sep 8, 2024 | 15% | 0% | 0% |
| Aug 11, 2024 | 10% | 0% | 0% |
| Jul 28, 2024 | 15% | 0% | 0% |
| Jan 28, 2024 | 10% | 0% | 0% |
| Dec 31, 2023 | 15% | 0% | 0% |
| Nov 19, 2023 | 10% | 0% | 0% |
| Aug 27, 2023 | 5% | 0% | 0% |
| May 21, 2023 | 10% | 0% | 0% |
The same location's rates under other U.S. travel-rate systems:
These three DSSR allowances compensate U.S. government civilian employees assigned to Williamtown. The post (cost-of-living) allowance offsets higher overseas costs of goods and services; the hardship differential pays for service where conditions are notably more difficult than in the continental U.S.; and danger pay applies during periods of civil insurrection, terrorism or war. COLA is a percentage of spendable income, while hardship and danger pay are percentages of basic pay -- mobility, HR and payroll teams combine them to compute total overseas compensation.
The exact request that returns this page's data. Change the
date parameter to query any historical effective
date, or pull it straight into your ERP, payroll, or expense system.
curl -H "X-API-Key: YOUR_KEY" \ "https://api.allowancesapi.com/v1/dssr/allowances/AU"{
"effective_date": "2026-07-12",
"results": [
{
"cola": {
"effective_date": "2026-07-12",
"rate": 25
},
"danger_pay": {
"effective_date": null,
"rate": null
},
"hardship": {
"effective_date": "2026-07-12",
"rate": 0
},
"iso_code": "AU",
"location": "Williamtown",
"postcode": "91191"
}
],
"verification_url": "https://aoprals.state.gov/content.asp?content_id=184\u0026menu_id=78"
}As of Jul 12, 2026, the DSSR allowances for Williamtown, Australia are: COLA (post allowance) 25%, hardship differential 0%, and danger pay 0%. Each is shown with its full history in the chart and table above.
COLA (the post allowance) offsets higher local costs of goods and services and is a percentage of spendable income. The hardship differential compensates for difficult living conditions, and danger pay for civil unrest, terrorism or war conditions -- both are percentages of basic pay.
The chart and table above show every change in COLA, hardship and danger pay for Williamtown back to May 21, 2023, and each is queryable by effective date via the API.
Allowances API is not affiliated with, endorsed by, or sponsored by any U.S. Government agency. All rate data is sourced from official public rate tables and re-published in a normalized format.